Jay-Z’s former business partner at Rocawear is a cheapskate who cheated his employees out of wages while living a life of luxury, a lawsuit charges.

Alex Bize, who co-owned the fashion label with the hip-hop mogul and sold his stake for hundreds of millions, screwed fashion designer Michele DeBellis, 46, out of nearly $29,000 in wages and fired her after she complained, according to papers filed yesterday in Manhattan Federal Court.

DeBellis, who worked with Bize’s Contemporary Streetwear, said that she was hired, at $130,000 a year, as the merchandiser and designer for the CAVI Women’s Collection but that she and some co-workers rarely saw paychecks.

“I couldn’t make ends meet anymore,” said a teary DeBellis, whose résumé includes work for Victoria’s Secret, Beyoncé and J.Lo.

The shady CEO was even accused of stiffing a corporate pilot out of $9,200 after he flew Bize around in his own private jet. Bize paid up only after ABC News made an inquiry.

And while DeBellis struggles to put her life back together, Bize continues to live it up at the swanky Trump Place in Manhattan, with a 24-hour personal driver and expensive art.

He also now runs the trendy fashion label CAVI, which counts 50 Cent, Nas and the Black Eyed Peas among its celebrity clientele.

“The whole time, I am looking at that Matisse painting on the wall, thinking I could buy a condo with that painting,” DeBellis said, referring to a visit to Bize’s ritzy home.

From the start of her employment in November 2010, she was paid sporadically, the legal papers state. When she repeatedly complained, Bize simply brushed her off.

He fired her on Aug. 5 after one final grievance, according to her lawyers, Matthew Blit and Russell Moriarty.